Since the beginning of September, the rains have returned to Mumbai and have created havoc. Due to heavy rainfall in the last four days, the maximum city was left flooded on Wednesday, September 4 which resulted in the disruption of rail services on Central, Harbour, and Western line. As lakhs of passengers were left stranded, Mumbai recorded a month's rainfall in the last four days.

In September, the island city usually receives rainfall of 327.1 mm but within four days of September this year, the Santacruz observatory recorded a whopping 488.7 mm of rainfall. According to the Santacruz observatory, between 1960 to 2010, the city had received 327 mm rain on average, whereas the Colaba observatory said that during the same tenure, Mumbai received 304.6 mm rainfall.

Meanwhile, on Wednesday, Navi Mumbai received a whopping 225.92 mm rainfall, which means that it has received a total rainfall of 3,980.20 mm so far, thus breaking a six-year-old record. Since the Navi Mumbai Municipal Corporation had begun recording rainfall data in 2005, the year when it had received the highest-ever rainfall received in a year, was 3,347.28 mm in 2013.

Till now, Navi Mumbai received the highest rainfall of 244 mm on June 28. Earlier in 2005, Navi Mumbai had received a total rainfall of 3,268.14 mm.